The AndyMark HD Nub, 6mm Bearing Bore, Single Boss is designed for robust and secure attachment in mechanical assemblies. It features pre-threaded attachment points, ensuring a high-strength connection suitable for various applications. This particular model is ideal for installing an individual Nub Bore item on a shaft, providing reliable performance in mechanical systems. The flat sides of the D-bore are precisely aligned with the setscrew side, optimizing torque transfer by pressing the shaft's flat into the nub's flat.